BIOL 221 Lecture Notes - Lecture 2: Pericardial Effusion, Pericardium, Serous Fluid
10 Feb 2020
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This may result in pericardial effusion in which fluid in the pericardial cavity increases. If the fluid accumulation is enough to decrease cardiac function, the result is cardiac tamponade. Make sure you can identify the apex (pointed inferior end), base (area from which great vessels arise), chambers (atria and ventricles), and valves (atrioventricular and semilunar). The main function of the atria is to receive blood from the veins, which they do whenever they aren"t contracting. They are also responsible for pumping some blood into the ventricles, which becomes very important as heart rate increases. Make sure you can identify and state the functions of the auricles, pectinate muscles, and interatrial septum. You should be able to describe the fossa ovalis and explain how it arises and describe the coronary sinus (also called the atrioventricular groove). The function of the ventricles is to pump blood into the arteries.
